Machine for cutting dome-heads.



J. H. AMES. MACHINE FOR CUTTING DOME HEADS. l

APPLICATION FILED APR.5, 1909.

936,073. Patemea @6a. 5, 1999.

3 SHEETS-SHEET 1.

J. MAGHINB PoR H. AMES. GUTTING DOME HEDS.

APPLICATION FILED APB..5, 1909.

Patented Oct. 5, 1999.

3 SHEETS-SHEET 2.

J. H. AMES. MACHINE PoR GUTTING. DOME HEADS.

APPLICATION FILED A?B..5, 1909.

Patented ont. 5, 1909.

3 SHEETS-SHEET 3.

viunrrnn STATES PATENT ornion.

JOSPH H. AMES, 0F .AK PARK, ILLINOIS, ASSIGNOR TO'AMERICAN COMPANY, CORPORATION O F NEW '.TERSlTY.

CAR & roUnDRY MACHINE FOR CUTTING DOM-HEADS.

To all whom iii/may concern.'

Be it known that l, `.losErH AMES, a citizen ofthe United States, residing at Oak Park, in' the countyy of Co and State otl Illinois, have. invented certain new and uselul Improvements in Machines for Cutting -l)omelle;uls. ot which the followingis a specification'.

The present. invention relates to a machine for cutting dome heads ot the st vle ordi'- narily employed for the heads ot' cylindrical tanks and similar structures. which domeheads are of concave-convex `Formation and are provided around each edge with a cylindrical rib or flange,v which attords a riveting surface for attachment to the cylindrical Wall ot' the tank.-

The machine is intended'to cut av circulaihole in the dome head; and the objectot the invention is to so construct the machine' that it can be adjusted to cnt such holes in dome heads ot' varyingsize and in a rapid and perfect manner. v

The invention relates particularly` to the construction and arrangement of the shears or dies Wherebv this Work is performed; to

vthe construction arrangement. and mounting ot'. the guide rol ers for positioning the dome heads; to 'the construction ofthe frame for supporting the dome head in position during the cutting operation; and to the machine as a Whole, constructed and arranged in the manner hereinafter set forth.

In the drawings, Figure 1 is an elevation, partly in section, of the cutting mechanism and associated parts of the present invention as applied to a. punch press of standard type,` showing only so much ot' the .punch press as isneeessary to explain the working of' the present invention; Fig. 2 a plan view ot' the tixed slnarand the supporting meehanism furthe dome head Fig. 3 a rear view of Fig. Q, with t-he rollers and fixed shear removed; Fig. .4 a front elevation of the supporting frame for the dome head; Fig.

5 a sectional detail ot the fixed' shear and its supporting member.; Fig. 6 a front elevation.

of the movable shear and its carrying head; Fig. 7 a side elevation of the same; and Fig.

S a planview of the movable shear and the.v

d'ovetail'block.

rl`he present invention is applied to a punch press having a frame of standard type, coml'u-ising a. base portion l0, an upright. portion 11, and au overhanging-portion Specification of Letters Patent.

Application tiled April 5,

atented Oct. 5, 1909. 1909. serial No. 487,938.

l'12, which, lea ves a substantially'rectangular recess for the reception of the various parts which comprise the present invention. rl`he tion for an outer casting 12a and an inner asting 13, the top surfaces ot which are in alinelnent with one another and ai'ord a support for an adjustable Supporting trame 14. The outer casting is of generally rectangular shape having base flanges lavhieh receive bolts 1G, which secure itv to the supporting or base portion ot the machine frame, and said casting is provided. in its upper surface or floor, with two ).)arallel T slots 17 which are in alinenicnt with-Similar T slots lbiu the supportingportion 19 ol the'inner casting, which portion is built up from the bod)v of the inner casting at the outer end thereof, as shown in Fig. l. 'lhe T slots furnish guideways for a pair'of front bolts20, and a pair of similar rear bolts 21, which are entered through a base plate 2*. ot? the adjustable `supporting frame 1st, the bolts being provided with the usual nuts 23 which permit the frame to be locked or clamped in adjusted position. The supporting frame ll comprises a longitrntinally e.\'tendin;- ril 2linto which merge the. sections of the transversel)Y extending rib 25, which tlares outwardly on each side toward its upper edge Ztl, as shown in Fig. 2.. The upper edge 2GI is rounded from end to end to conform to the concavity on the inner surface of the dome head; and the edg'e is beveled don'n\vardl from fronti to rear in order to support the doni:-y head at an :ingle to the horizontal plane .it the machine. 'l`he point ot' intersection ot the longitudinal ril.) and the transverse rib iiulicatcs the center support l'or the dome head. and the longitudinal rih is given an upward slope 'from rear to and the angleat which it' is supsupporting or base portion atlords at'oundat'ront commensurate with the curve ol the.,

tit snugly into tit) y which is given a' downward dip or curvature toward its center as indicated in Fig. which -is'necessary in order to compensate for the curved or concaved formation of the cutting face of the knife, and atv the same time bring up portions of the upper edge of the lower knife into contact with the dome v head'supportedthereon. This will be un-4 derstood when it is remembered that the dome head is supported at an angle. The lovver or fixed vshear is secured in place'by means'of diagonally extending bolts 34 the heads of which abut against the rear `face of the backing rib 28. The fixed shear cooperates With a movable shear 85 Whose cutting edge is beveled, and lWhose cutting face 36 is eonv'exedto .register WithA the concavityl f of the fixed shear, and the cutting edge-tis given a downward curvature toward its cen-f ter commensurate 'with the convexity of the" rear or cuttingface of the shear, whichtiene;A

vatureis somewhat more pronounced, and is 'f drawn on a sharper, radius than the dip or curvature of the fixed shear with which it cooperates. The. nonacting face ofthe shear,

unlike the acting face thereon, is straight or( plain'except for a jog 37 which receives a straight flange 3S of uniform thickness from end to'vend, which flange depends from a shear block 39' of dovetailformation. `The shear is furthermore provided on its upper edge with a tongue 39'Which enters a groove 40 in the shear block. `The shear is held in place bylueans of a pair ofA screw bolts 41, which are entered through the flange 88 and into the body of the shear, which is thus 'held firmly and rigidly in engagement With the shear block. vThe latter is carried by a .guide block 42 bolted to the lower end of a plunger 4,3 of the usual type. The guide block '-12 is provided With a transversely extending dovetail groove i4 which receives the shear block, Which-latter is provided With a screw adjusting Wheel 45 lwhich is threaded into one end ofl the shear block and is journaled through a locking bar 46 provided at opposite sides at each end with a recess 47, forming in effect oppositely disposed hooks which are adapted to engage the Shanks of a pair of locking bolts 48, the construction being one whereby the shear block can be inserted in its groove or socket and thereafter the locking bar turned to position to engage the locking bolts, after which the sheary block can be laterally adjusted to any desired position," f

,ors

The lower edge of the dome head rests against and is supported by a pair of rollers t) ufhich are journaled upon a pair of pintlesO located on opposite sides of the rectangular center of the machine, and

ing 13. The carriage is further provided atA its rear end with adepending lug through which is threaded anadjustingscrew 56 carrying anhand Wheel 57 to facilitate adjust-ment, and the inner end 58 of the ad? justing screw is shouldered down and jour. naled through the forward Wall 59v of the casting 13beix11gy held vin place by means of a nut 60 entered onto a threaded, stud 61 on the forwardfend of the adjusting screw.` The'casting `13. is cored out on itsinterior "tovreduce theWeight and to aord a clearance for the adj listing4 screw which is jeurnaled at its-forward end only, its rear end being supported by the lug on the roller carriage. `The rear casting 13, like the for- Ward casting'lQ, is provided with side flanges '62 Which' receive bolts63 Which secure it to the base portion of the machine.

In use, a. dome head is first punched with a hole in its center of a size to receive the center pin27, but this punching does not injure the dome head in any Way since the center portion is intended to becut out. The hole in the dome head is then brought dos.

into register with the pin and laid upon the sloping surface of the supportingframe and supported by the longitudinallyv extending and transversely extending ribs,` after which the roller carriage is adjusted to Abring the rollers into engagement With the adjacent.

portion of the dome flange. The vidoine head is'w in the position to be cut, and with each descent fof the plunger the upper and lower shears'vvill coact to shear or cut the being supported upon and held against this portion y the upper kvedge' of the lower shear upon which it rests.' By revolving the dome head Witheaeh/cut of the shears, the circular inner piece of the dome head will be cut away from the remainder thereof as Waste, leaving in the dome head a clean cutj having beveled edges. Byreason f of the 'angle at which the dome head is supported, and the side range -ofthe supporting surfaces, tiltingof'the dome will preventedl a'ord a clearance for 'during the cutting operation, and an easy .tion strictlty to the use of -i'erred toit is the intention to embrace die ting members located on opposite sides of.

the work and adapted, with each actuation,Y 'to make a circular cut for cutting away, with 'combination ot' a work- `the depression of the waste section of the work when cut away and forced back by v work, fixed 'and adapted to maize a circular cnt with essere method of rotatably feeding the dome will be aiiorded.

It is not the intention to limit the invenshears for performing the cutting operation since, in place thereof. dies adapted to entirely remove a section ot' metal could be substituted, and it will be A,understood that in the vclaims in which cutting members, or the like, are 1remembeusl as well as shear members.

'lhe method oi supporting the dome at an oblique angle with respect to the movement oi the shear is `highly important in that 'a beveled edge is required in the operation of milking the seam formed around the center opening in the completed dome head.

What .l claim as new and desire to secure by Letters Patent is:

l. ln a machine of the class described,the 'combination of a Work-supporting frame having u diagonally disposed supporting surface, adjustable guide rollers adapted to bear against the edge of the frworkx and cutsuccessive cuttings, a circular piece from the center ot the work, substantially as described.

lu a uuu-bine of the class described, the A supporting frame having a diagonally disposed supporting surface, adjustable guide rollers adapted to bear against the edge of the work, and iixed and movable shear members on opposite sides of the work, the supporting frame adjacent to the acting face of the shear member being cut away to aiiord a clearance for the movable described.

3. Ina ma hine of the class described, the combination f a work-supporting frame having. a. diagonally disposed supporting surface, Ameans for supporting the lower edge of the worh. when resting upon the diagonally disposed supporting surface, said means permitting rotation ot the work for cutting out a piece mom the center of the work, and fixed and movable shear members on oppositesides of the work, the supporting shear member, substantially as frame adjacent to the acting tace of the fixed shear member being cut awa -to the depression o the waste section ol.E the work when cut away and forced back by the movable shear member, substantially aadescribed. .i

4. In n machine of the class described, the combination oa supporting frame for the and movable shear members adapted to engage opposite sides oi the work each actuation ci the movable member, and successive cuts serving to sever af circular section from the center of the work, and the Y be forced back by the engagement of the movable member, substantially as described. 5. In a. machine of the class described, the combination of a supporting frame for the work, fixed and movable shear members adapted to engage opposite sides or the work and adapted to make a circular cut with each actuation of the movable member, successive cuts serving to sever a circular section from the center of the work, and the supporting member being cut away adjacent to the act# ing'face of theixed member for permitting the waste section of the work to be forced back by the engagement of the movable member, and guide rollers for engaging the edgeof the work, substantially as described.

6. In amachine of the class described, the combination of supporting' frame for the work, fixed and mcvable shear members ladapted to engage opposite sides of the work and adapted to make a circular cut with each actuation of the movable member, successive cuts serving to sever a circular section from the center of the work, and the supporting member being cut away adjacent to the acting face of the fixed member iorpermitting the waste section oi the work to be forced back by the engagementof the movable member, guide rollers for engaing the edge of the work, a roller carriage upon which the guide rollers are carried, and means for adjusting the carriage toward and from the center of the work, substantially as described. l

In a machine of the class described, the combination of a work-supporting frame, a iiXed shear secured to said frame and having a concavely cur'ved inner or acting face, and a movable shear co-.acting therewith and having a convex acting face, the work-sup-v port being cut away adjacent to -the acting face of` the Xed shear to permit of the bending back of the waste section of the work by the engagement of the movable shear, substantially as described.

' 3. In a machine of the class described, the combination of a work-supporting frame, a lined shear secured to said frame and having a concavely curved inner or acting face, a movable shear cc-acting therewith and having a convex acting face, the work-support being cut away adjacent to the acting :tace of the ixed shear to permit of the bending back of the waste section of the work by the engagement of the' movable gear, a reciprocating member provided with a guide slot, a shear block adapted to be adjusted within said slot and to which the mcvable slijear' is securedan adjusting screw entered having a convex acting face,the work-suje-` port. being Cut away adjacent to the acting i face of the fixed shear to permit of the bending back of the Waste section of the Work by the enga'ement of the movable gear, a reciprocating member provided with a guide slot, a shear block adapted to be adjusted Within said slot and .'o which the movable shear is secured, an adjustingr screw entered into the shear block, a locking bar through which the adjusting screw is journaled, said bar being provided, near its ends, on opposite sides, with a pair of recesses furnishing, in effect, hooks at each end of the bar, and belts outwardly projectingfrom the reciprocating member, with which said hooks are adapted to engage, substantially as described.

l0. In amachine of the class describef,-

a reciprocating member bided with a guide recess, a blecl'z` adjasta-liiy entered Within v'said recess, a cutting .iember carried by said block, an adjusting screw entered into `said block, a lecking bar removably connect'ed with therreciprocating meer ber, through which bar the adjusting screw is journaled, and a fixed cutting member cooperating with the reciprocating cutting member, substantially described.

l1. In a machine of the class described, a 1

reciprocating member provided with a guide recess, a block adjnstably entered Within said recess, a cuttingmember carried by said block, an adjusting screw entered into said block, a locking bar provided in each endv and on oppositesides with a reces giving to the bar a hook formation at end, bolts outwardly projecting from the reeip roc-ating member with which said hooks are adapted to engage, and a. fixed cutting meniber coperatin` with 'the reciprocating cntting member, substantially as described.

JSEPH H. AMES.

; v Witnesses:

WALKER BANNiNG, PERSON W. BANNING. 

